Malicious PDF — malware analysis report

Static analysis result for SHA-256 78cc0f9411779a28…

MALICIOUS

PDF

73.3 KB Created: 2021-02-24 13:16:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b12ffe6777e48b8b9b8dc4faa0eb6c76 SHA-1: 327ac1ff32bc486feaeb484b026a17856378a57f SHA-256: 78cc0f9411779a2855b6bc9bac7a7aa13f6b83cbd84a52b936771654437a89c4
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://seumenha.ru/wb?keyword=motorola%20mb810%20sim%20card%20location PDF link annotation
    • http://musc-media.xyz/troy_bilt_pony_riding_lawn_mower_troubleshootingtfs2p.pdfIn PDF document text
    • http://maska-respirator.shop/35283880552mhpik.pdfIn PDF document text
    • https://sowovejapa.weebly.com/uploads/1/3/4/7/134709895/7296438.pdfIn PDF document text
    • https://nolenefin.weebly.com/uploads/1/3/4/6/134629259/71e731.pdfIn PDF document text
    • https://jopuwijexanubuf.weebly.com/uploads/1/3/0/8/130874501/manuvilejopuk_gabilixofojo.pdfIn PDF document text
    • https://fosevikotik.weebly.com/uploads/1/3/1/6/131637163/lesobupubido.pdfIn PDF document text
    • http://sreview.online/37560852011ko9kp.pdfIn PDF document text
    • http://roflan.site/jojevatopclrlf.pdfIn PDF document text
    • https://tajuzoliv.weebly.com/uploads/1/3/4/3/134359899/memibam.pdfIn PDF document text
    • http://omerkatanalp.com/15127168957zok4k.pdfIn PDF document text
    • http://nebo-baikala.ru/achalpur_amravati_weather_reportw3qay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/poresi/51378131659.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/ranikonunusuxanego.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/arcsine_transformation_statistics.pdfIn PDF document text
    • http://jevoxomififewi.epizy.com/bestow_verb_forms.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCE 5616 bytes
SHA-256: abef60aa490bd403d5e23f29e49039c7d5f0e97a974bb3941da72c0d0a9b68af
font_01_sfnt_off0000f2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D3 11076 bytes
SHA-256: dbcbb2b450a59c3f0819977e41a6e8535923c4b79be85b553bd5578ed8d18ad9